As I buy stuff for my "new" 2005 Yukon XL, I got WeatherTech floor liners and they fit nice. I then received the Cargo Liner that is supposed to protect the carpet, to the 2nd Row Seat ( removing the 3rd row bench).

It looks like, on their website, that the cargo liner is long enough to reach the back of the second row seat. It doesn't. ( they say, " It goes to the foot well")

But the foot well edge is 11" before the rear seat. It looks "funky"...
I took a photo just like their website ( low camera angle)....
I then took a photo standing up at the rear tailgate.

( It almost looks like this "XL" mat also fits the standard cargo size of a Tahoe?)

Is there a cargo liner that actually covers the whole cargo area to the rear 2nd seat???